<template lang="html">
  <transition name="move">
  <div v-show="showFlag" class="food" ref="food">
    <div class="food-content">
      <div class="image-header">
        <img :src="food.image">
        <div class="back" @click="hide">
          <i class="icon-arrow_lift"></i>
        </div>
      </div>
      <div class="content">
        <h1 class="title">{{food.name}}</h1>
        <div class="detail">
          <span class="sell-count">月售{{food.sellCount}}份</span>
          <span class="rating">好评率{{food.rating}}%</span>
        </div>
        <div class="price">
          <span class="now">￥{{food.price}}</span>
          <span class="old" v-show="food.oldPrice">￥{{food.oldPrice}}</span>
        </div>
        <div class="cartcontrol-wrapper">
          <cartcontrol :food="food"></cartcontrol>
        </div>
        <transition name="fade">
        <div @click.stop.prevent="addFirst" class="buy" v-show="!food.count || food.count===0">
          加入购物车
        </div>
        </transition>
      </div>
      <split v-show="food.info"></split>
      <div class="info" v-show="food.info">
        <h1 class="title">商品信息</h1>
        <p class="text">{{food.info}}</p>
      </div>
      <split></split>
      <div class="rating">
        <h1 class="title">商品评价</h1>
        <ratingselect :select-type="selectType" :only-content="onlyContent" :desc="desc" :ratings="food.ratings"></ratingselect>
        <div class="rating-wrapper">
          <ul v-show="food.ratings && food.ratings.length">
            <li v-show="needShow(rating.rateType, rating.text)" v-for="(rating, $index) in food.ratings" class="rating-item border-1px">
              <div class="user">
                <span class="name">{{rating.username}}</span>
                <img :src="rating.avatar" width="12" height="12" class="avatar">
              </div>
              <div class="time">{{rating.rateTime | formatDate}}</div>
              <p class="text">
                <span :class="{'icon-thumb_up': rating.rateType===0, 'icon-thumb_down': rating.rateType===1}">{{rating.text}}</span>
              </p>
            </li>
          </ul>
          <div class="no-rating" v-show="!food.ratings || !food.ratings.length">暂无评价</div>
        </div>
      </div>
    </div>
  </div>
  </transition>
</template>

<script>
import BScroll from 'better-scroll';
import Vue from 'vue';
import {formatDate} from '../../common/js/date.js';
import cartcontrol from '../cartcontrol/cartcontrol.vue';
import ratingselect from '../ratingselect/ratingselect.vue';
import split from '../split/split.vue';

import {eventHub} from 'common/js/eventHub';

const ALL = 2;

export default {
  name: 'food',
  props: {
    food: {
      type: Object
    }
  },
  data() {
    return {
      showFlag: false,
      selectType: ALL,
      onlyContent: true,
      desc: {
        all: '全部',
        positive: '推荐',
        negative: '吐槽'
      }
    };
  },
  methods: {
    show() {
      this.showFlag = true;
      this.selectType = ALL;
      this.onlyContent = true;
      this.$nextTick(()=> {
        if(!this.scroll) {
          this.scroll = new BScroll(this.$refs.food, {
            click: true
          });
        } else {
          this.scroll.refresh();
        }
      });
    },

    hide() {
      this.showFlag = false;
    },

    addFirst(event) {
      if(!event._constructed) {
        return;
      }
      eventHub.$emit('cart.add', event.target);
      Vue.set(this.food, 'count', 1);
    },

    needShow(type, text) {
      if(this.onlyContent && !text) {
        return false;
      }
      if(this.selectType === ALL) {
        return true;
      } else {
        return type === this.selectType;
      }
    },
  },
  created() {
    // 对应子组件emit调用
    eventHub.$on('ratingtype.select', (type) =>  {
      this.selectType = type;
      this.$nextTick(()=> {
        if(this.scroll) {
          this.scroll.refresh();
        }
      });
    });
    eventHub.$on('content.toggle', (onlyContent)=> {
      this.onlyContent = onlyContent;
      this.$nextTick(()=> {
        if(this.scroll) {
          this.scroll.refresh();
        }
      });
    });
  },
  filters: {
    formatDate(time) {
      let date = new Date(time);
      return formatDate(date, 'yyyy-MM-dd hh:mm');
    }
  },
  components: {
    cartcontrol,
    ratingselect,
    split
  }
}
</script>

<style lang="scss">
  @import "../../common/scss/default";
  @import "../../common/scss/mixin";
  .food {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 48px;
    z-index: 30;
    width: 100%;
    background: $white;
    transition: all .2s linear;
    transform: translate3d(0, 0, 0);
    &.move-enter,
    &.move-leave-active {
      transform: translate3d(100%, 0, 0);
    }
    .image-header {
      position: relative;
      width: 100%;
      height: 0;
      padding-top: 100%;
      img {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
      }
      .back {
        position: absolute;
        top: 10px;
        left: 0;
        .icon-arrow_lift {
          display: block;
          padding: 10px;
          font-size: 20px;
          color: $white;
        }
      }
    }
    .content {
      position: relative;
      padding: 18px;
      .title {
        line-height: 14px;
        margin-bottom: 8px;
        font-size: 14px;
        font-weight: 700;
        color: $default;
      }
      .detail {
        margin-bottom: 18px;
        line-height: 10px;
        height: 10px;
        font-size: 0;
        .sell-count,
        .rating {
          font-size: 10px;
          color: $grey2;
        }
        .sell-count {
          margin-right: 12px;
        }
      }
      .price {
        font-weight: 700;
        line-height: 24px;
        .now {
          margin-right: 8px;
          font-size: 14px;
          color: $red;
        }
        .old {
          text-decoration: line-through;
          font-size: 10px;
          color: $grey2;
        }
      }
      .cartcontrol-wrapper {
        position: absolute;
        right: 12px;
        bottom: 12px;
      }
      .buy {
        position: absolute;
        right: 18px;
        bottom: 18px;
        z-index: 10;
        height: 24px;
        line-height: 24px;
        padding: 0 12px;
        box-sizing: border-box;
        border-radius: 12px;
        font-size: 10px;
        color: #fff;
        background: $blue;
        transition: all 0.2s;
        opacity: 1;
        &.fade-enter,
        &.fade-leave-active {
          opacity: 0;
        }
      }
    }
    .info {
      padding: 18px;
      .title {
        line-height: 14px;
        margin-bottom: 6px;
        font-size: 14px;
        color: $default;
      }
      .text {
        line-height: 24px;
        padding: 0 8px;
        font-size: 12px;
        color: $grey;
      }
    }
    .rating {
      padding-top: 18px;
      .title {
        line-height: 14px;
        margin-left: 18px;
        font-size: 14px;
        color: $default;
      }
      .rating-wrapper {
        padding: 0 18px;
        .rating-item {
          position: relative;
          padding: 16px 0;
          @include border-1px(rgba($default, 0.1));
          .user {
            position: absolute;
            right: 0;
            top: 16px;
            line-height: 12px;
            font-size: 0;
            .name {
              display: inline-block;
              margin-right: 6px;
              vertical-align: top;
              font-size: 10px;
              color: $grey2;
            }
            .avatar {
              border-radius: 50%;
            }
          }
          .time {
            margin-bottom: 6px;
            line-height: 12px;
            font-size: 10px;
            color: $grey2;
          }
          .text {
            line-height: 16px;
            font-size: 12px;
            color: $default;
            .icon-thumb_up,
            .icon-thumb_down {
              margin-right: 4px;
              line-height: 16px;
              font-size: 12px;
            }
            .icon-thumb_up {
              color: $blue;
            }
            .icon-thumb_down {
              color: $grey2;
            }
          }
        }
        .no-rating {
          padding: 16px 0;
          font-size: 12px;
          color: $grey2;
        }
      }
    }
  }
</style>
